Dumping-car



3 SheetsSheet 1 A. OI-IARA.

DUMPING GAR.

Patented Mar. 3, 1885.

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(No Model.) 3 Sheets-Sheet 2" A. OHARA.

DUMPING GAR. No. 313,361. Patented Mar. 3, 1885.

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DUMPING OAR. No. 313,361. Patented Mar. 3, 1885.

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SPECIFICATION forming part of Letters Patent No. 313.361, dated March 3,1885 Application filed December 15, 18:4. (No model.)

To all whom it may concern.-

Be it known that I, ARTHUR OHARA, a citizen of the United States,residing at Hawley, in the county of Vayne and State of Pennsylvania,have invented certain new and useful Improvements in Means for DumpingCa s, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relates to an improvement in means of dumping a car ortrain of cars from the engine without the necessity of operating byhand, as usually practiced.

The invention consists in the peculiar construction of thedumping-platform,in connection with the steam pipe and cylinders for operating such platform, and also in general mechanical details,fullyhereinafter described. 1n the drawings, Figure 1 is a plan view of thebottom of a dumping-car, showing the steam-cylinders and connections.Fig. 2 is a longitudinal section. Fig. 3 is a view of the valve-chamberand valve. Fig. 4 is an end view of the car. Fig. 5 is a separate viewof slide-valve.

The frame-work of the car may be constructed, in the ordinary manner, oflongitudinal beams A A and cross-braces B B, to the latter of which thetrucks are swiveled. The car body or box consists of rigid sides orrails G O and a sectional floor or bottom, D D. These sections arehinged together on a central longitudinal line by means of a rod, E,which passes through eyes in plates a a, secured to the respectivesections of the floor, so that thelatter may be raised at the middle, toallow the load to be dumped on both sides at once. The rod E is extendedbeyond the bottom at both ends and works up and down in guides 12 b,secured to the frame of the car.

F is a steam-pipe which passes below the car, having proper couplings,so that it may extend below all the cars of the train. It is connectedat the forward end with the boiler or steam-drum.

G G represent steam-cylinders, secured in vertical position below thecar-body,near each end. These cylinders are connected by a pipe, g,which enters them at or near their lower ends, and another pipe, h,connects this pipe to the main steam-pipe F, so that steam may beadmitted to both cylinders simultaneously. If preferred. however, asingle central cylinder may be employed, though in dumping heavy loadsthe results are more satisfactory when two are used, one near each end.In each cylinder G works a piston, g, the stem or red of which isconnected to the central rod, to which the car-body is hinged. Theadmission ofsteam into the cylinders, and consequent lifting of thepistonswill raise the movable rod,and, as before described, thereby dumpthe car. This admission of steam to these cylinders and its exhausttherefrom are controlled by the valve shown in Fig. 3. The valve iscomposed of a sectional case, I I, within which slides the valve proper,l'fland is placed on the engine so as to connectthe main steam-pipe Fwith a pipe leading from the steam-drum, these pipes being tapped intoopposite sides of the valve-case. The valve 1 slides in guides in thesection I, as shown. This side ofthe valve-chamber has three ports, 6 t"t, of which the port 1' communicates with the main steam pipe F. Thevalve proper is a plate of metal having beveled sides or edges j, and itis provided witha controllingrod, la, which passes through the slot kinthe case. and by which it'is operated. The port i,when the valve is inposition to allow it, communicates with the steam-supply pipe, while theport i is connected to the blow-off passage i and exhaust-pipe.

The operation ofthe valve will bethoroughly understood by reference tothe gage-scale in dicated thereon. For instance, when the point 1 is atthe guiding-mark the steam can flow freely into the pipe F, the currententering from the feed-pipe and passing over the beveled end of thevalve and through the pipe F. If the valve is at 2 or 3 or anyintermediate point, all the ports are closed to steam. \Vhen it is movedto 4, the exhaust-port i is opened.

The operation of dumping has been sufficiently explained. Ordinarily thecar-body, when steam is shut off, will drop by gravity to place. If itshould happen, however, that it should stick from any cause,theexhaust-port is opened, which causes the pistons in the verticalsteam-cylinders to pull the car-body forcibly down to closed position.In their movement the sections of the body are guided by segmentalprojections H, which bear on rollers mm journaled in the frame-work.

The main steam-pipe F is connected by a branch pipe, 7b, with thecylinder K. The piston-rod 0 of this cylinder is loosely attached to alever, p, secured to or forming part of a crank-shaft. q, journaledinone of the brakebeams r. The cranked portion of this shaft is connectedto the other brake. s, as shown. The brakes are operated simultaneouslyby the exhaust, which causes the piston-rod to pull the brake r directlyforward, and by slightly turning the crank to push the brake sdirectlyback.

It will be seen that the operation of the brakes in no way interfereswith that of the dumping mechanism, since their application tends tocause the car-body to remained closed.

Having thus described my invention, I claim as new and desireto secureby Letters Patent u 1 rm 'na 'on o 1 In a d mpln t u, the c) bi t1 fcentrally-hinged platlorm-sections. a steam-- pipe extending beneath thecar, one or more steam-cylinders having pistons connected to the hingedsections, so as to operate them positively in both directions,and acontrollingvalve having inlet and exhaust ports, whereby steam may beadmitted to the cylinders to raise the platform, or exhausted therefromto lower it, substantially as described.

2. The combination, with the platform-sectionshinged upon a centrallongitudinalrod, of steam cylinders and pistons beneath the car, suchpistons being connected to the said rod, substantially as described.

3. The combination, with the platform-sectionshinged upon a longitudinalrod having a vertical movement in guides b, of steam cylinders andpistons connected to such rod, substantially as described.

In testimony whereof Ihave afiixed my signature in presence of twowitnesses.

ARTHUR OHARA.

WVitnesses:

Moses 0. XVEsTBRooK, J12, llIIOHAEL J. llOWLEY.

